Relative uncertainty (1﹩\sigma ﹩) of the weighted mean LOS magnetic field as a function of the relative uncertainty (1﹩\sigma ﹩) of the TEC across various radio configurations. The SNR of the RCP and LCP signals was set to 40 dB and 20 dB, respectively, and the SEP angle was fixed at 10°. The magnetic field magnitude and TEC were set to 100 μT and ﹩1.0\times {10}^{20}\,{{\rm{m}}}^{-2}﹩, respectively.